Pocket sealing machine including a retractable suction head

Abstract

An opening of a plastic bag with an article stored therein is placed between a cover and a vacuum assembly of a pocket sealing machine. Moving a rib to a second slot will extend a suction head into the opening of the bag. Pressing the cover will enable an electric heater to start heat sealing the opening of the bag. The machine can be relatively moved across the opening of the bag until the suction head is wrapped. After disabling the electric heater, a switch activates a motor for disabling the heat sealing and enabling the suction head to make a vacuum in the bag. Releasing the switch will deactivate the motor. Moving the rib back to a first slot will retract the suction head, and the machine is moved to cover the opening of the bag. Pressing the cover toward the vacuum assembly at that time will enable the electric heater to seal the opening.

1. A pocket sealing machine for heat sealing a plastic bag or microwavable bag with an article stored therein so as to seal and make a vacuum comprising:
 a lower housing; 
 two spaced resilient members and an intermediate spring disposed in a front compartment of the lower housing; 
 an electric heater mounted on the resilient members and the spring; 
 a switch and a power socket, respectively, mounted on one side and a rear of the lower housing; 
 an upper housing comprises a pivotal cover; 
 a compartmented member secured to a front bottom of the pivotal cover; 
 a pressing member and a pressing block located in the compartmented member; 
 a spring provided between the pivotal cover and the compartmented member and urged against the pressing member; 
 an elastic piece having a forward hole put on a projection projected downwardly from the pivotal cover; and 
 a vacuum assembly mounted on the lower housing and comprising a motor assembly, a hose, a suction head, a spring and a casing, with the spring being put on one end of the suction head and the suction head being disposed in the casing, with a lateral bar of the suction head extending through a channel of the casing, with a rib on the lateral bar being anchored in a first slot of the casing, with the suction head inserted into the hose and then into the motor assembly; 
 whereby in response to placing one end of an opening of the bag in the mouth and energizing the machine, the rib can be pushed to move the suction head from the first slot to a second slot to extend a forward portion of the suction head into the opening of the bag; whereby in an initial sealing operation, the cover is pressed toward the vacuum assembly to engage the pressing block with the electric heater for starting to weld the opening of the bag, and the machine can be moved from one end of the opening of the bag toward the other end thereof until a hole at the opening of the bag having substantially the same size as the forward portion of the suction head is formed at a position near the other end, wherein a roller rotates on the bag for pressing the opening of the bag for providing flatness thereto; whereby in a suction operation of the bag, the cover is released to disengage the pressing block from the electric heater, and pressing the switch will activate the motor assembly, with the initial sealing operation being disabled and the suction head being enabled to suck air from the bag and direct air to the air outlet for discharge via the hose and the air inlet, and releasing the switch will deactivate the motor assembly when most of the air inside the bag has been exhausted; and whereby in a final sealing operation of the bag, the rib is pushed to move the suction head from the second slot to the first slot to retract the forward portion of the suction head into the casing, the machine is moved to cover the hole of the opening of the bag, and the cover can be pressed toward the vacuum assembly to engage the pressing block with the electric heater for completely welding the opening of the bag. 
 
     
     
       2. The pocket sealing machine of  claim 1 , wherein a roller is rotatably mounted adjacent the electric heater. 
     
     
       3. The pocket sealing machine of  claim 1 , wherein the motor assembly is provided with an air inlet and outlet at both sides adjacent a top. 
     
     
       4. The pocket sealing machine of  claim 1 , wherein batteries are provided in the power socket. 
     
     
       5. The pocket sealing machine of  claim 1 , wherein an adapter connected to AC power are provided in the power socket.